焊接成型是否好看与焊接顺序有关系(焊接成型的优缺点)

导语：焊接成型是否好看与焊接顺序有关

焊接顺序就是在焊接结构上先焊哪部分，后焊哪部位，即每道焊缝的焊接顺序。

The welding sequence is the welding sequence of each weld, which part is welded first and which part is welded later.

焊接顺序不合理对焊接质量的影响：

Influence of unreasonable welding sequence on welding quality:

（1）焊接顺序影响焊件的应力和变形，焊接顺序不合理会造成焊件变形或内应力过大，降低焊件质量，还会导致焊件报废。

(1) The welding sequence affects the stress and deformation of the weldment. Unreasonable welding sequence will cause the deformation or excessive internal stress of the weldment, reduce the quality of the weldment and scrap the weldment.

（2）装配和焊接顺序不合理，会导致某些位置焊接困难，无法焊接，降低了焊接结构的强度或气密性要求。

(2) Unreasonable assembly and welding sequence will lead to difficult welding at some positions, which will reduce the strength or air tightness requirements of the welded structure.

（3）焊接顺序选择不合理，与腐蚀性介质接触的焊缝在焊后会受到热作用，产生晶间腐蚀，降低焊件耐蚀性。

(3) The selection of welding sequence is unreasonable. The weld in contact with corrosive medium will be subjected to thermal action after welding, resulting in intergranular corrosion and reducing the corrosion resistance of weldments.

如何选择焊接顺序

How to select welding sequence

选择焊接顺序的基本原则如下：

The basic principles for selecting welding sequence are as follows:

（1）从装配焊接角度来看，要在不造成焊接困难为原则的前提下来考虑焊接顺序。

(1) From the perspective of assembly welding, the welding sequence should be considered on the premise of not causing welding difficulties.

（2）从减少残余应力、焊接变形的角度考虑：

(2) From the perspective of reducing residual stress and welding deformation:

a.从焊接结构的中心向外焊接；

a. Welding outward from the center of the welded structure;

b.从厚板方向向薄板方向焊接；

b. Welding from thick plate to thin plate;

c.先焊收缩大的接头，再焊收缩小的接头；

c. Weld the joint with large shrinkage first, and then weld the reduced joint;

d.先焊垂直焊缝，再焊水平焊缝；

d. Weld the vertical weld first and then the horizontal weld;

e.平行焊缝应尽可能同时同向焊接；

e. Parallel welds shall be welded in the same direction as much as possible;

f.先焊短焊缝，然后再焊长焊缝。

f. Weld the short weld first and then the long weld.

以上为大家详细介绍了关于焊接成型是否好看与焊接顺序有关的内容，希望上述内容对大家有所帮助。

The above introduces in detail the contents related to the welding sequence about whether the welding forming is good-looking. I hope the above contents will be helpful to you.

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